35 lines
2.3 KiB
Plaintext
35 lines
2.3 KiB
Plaintext
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rule TrojanDownloader_O97M_Obfuse_SB_MTB{
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meta:
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description = "TrojanDownloader:O97M/Obfuse.SB!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00 "
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strings :
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$a_01_0 = {3d 20 49 73 45 6d 70 74 79 28 22 22 29 } //1 = IsEmpty("")
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$a_01_1 = {3d 20 49 73 4e 75 6d 65 72 69 63 28 22 22 29 } //1 = IsNumeric("")
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$a_03_2 = {2e 49 74 65 6d 28 29 2e 44 6f 63 75 6d 65 6e 74 2e 41 70 70 6c 69 63 61 74 69 6f 6e 2e 53 68 65 6c 6c 45 78 65 63 75 74 65 20 [0-15] 2c } //1
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$a_03_3 = {3d 20 52 65 70 6c 61 63 65 28 [0-25] 2c 20 [0-25] 2c 20 22 22 29 } //1
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$a_01_4 = {26 20 22 34 } //1 & "4
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$a_01_5 = {26 20 22 33 } //1 & "3
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$a_01_6 = {26 20 22 32 } //1 & "2
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condition:
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((#a_01_0 & 1)*1+(#a_01_1 & 1)*1+(#a_03_2 & 1)*1+(#a_03_3 & 1)*1+(#a_01_4 & 1)*1+(#a_01_5 & 1)*1+(#a_01_6 & 1)*1) >=7
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}
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rule TrojanDownloader_O97M_Obfuse_SB_MTB_2{
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meta:
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description = "TrojanDownloader:O97M/Obfuse.SB!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,09 00 09 00 09 00 00 "
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strings :
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$a_03_0 = {2e 43 61 70 74 69 6f 6e 20 3d 20 [0-10] 28 32 2c 20 22 [0-40] 22 29 } //1
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$a_03_1 = {2e 54 61 67 20 3d 20 [0-10] 2e 43 61 70 74 69 6f 6e 20 2b 20 [0-10] 28 33 2c 20 22 [0-40] 22 29 } //1
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$a_03_2 = {4f 70 65 6e 20 [0-10] 2e 54 61 67 20 46 6f 72 20 42 69 6e 61 72 79 20 41 73 20 23 31 } //1
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$a_03_3 = {44 6f 20 57 68 69 6c 65 20 44 69 72 28 [0-10] 28 35 2c 20 22 [0-50] 22 29 2c 20 76 62 44 69 72 65 63 74 6f 72 79 29 20 3d 20 22 22 } //1
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$a_01_4 = {61 48 52 30 63 44 6f 76 4c 7a } //1 aHR0cDovLz
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$a_01_5 = {2e 54 61 67 20 3c 3e 20 22 73 74 61 67 65 22 20 54 68 65 6e } //1 .Tag <> "stage" Then
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$a_03_6 = {2e 43 61 70 74 69 6f 6e 20 3c 3e 20 22 61 70 70 6c 65 22 20 54 68 65 6e 20 4f 70 65 6e 20 [0-15] 2e 54 61 67 20 46 6f 72 20 42 69 6e 61 72 79 20 41 73 20 23 33 } //1
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$a_01_7 = {44 65 63 6c 61 72 65 20 46 75 6e 63 74 69 6f 6e 20 53 65 74 50 72 6f 63 65 73 73 57 69 6e 64 6f 77 53 74 61 74 69 6f 6e 20 4c 69 62 20 22 75 73 65 72 33 32 22 20 28 42 79 56 61 6c 20 68 57 69 6e 53 74 61 20 41 73 20 4c 6f 6e 67 29 20 41 73 20 42 6f 6f 6c 65 61 6e } //1 Declare Function SetProcessWindowStation Lib "user32" (ByVal hWinSta As Long) As Boolean
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$a_03_8 = {3d 20 53 68 65 6c 6c 28 [0-10] 2c 20 [0-10] 29 } //1
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condition:
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((#a_03_0 & 1)*1+(#a_03_1 & 1)*1+(#a_03_2 & 1)*1+(#a_03_3 & 1)*1+(#a_01_4 & 1)*1+(#a_01_5 & 1)*1+(#a_03_6 & 1)*1+(#a_01_7 & 1)*1+(#a_03_8 & 1)*1) >=9
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} |